OWEN Roberts conjured up a fortunate winner as AFC Wimbledon booked a Surrey Senior Cup semi-final with victory at Chipstead last night.

The Dons' U18s centre-back knew little about his goal on 73 minutes, Chipstead keeper Martin Grant pushing a free-kick onto the onrushing defender's head and into an unguarded net.

To rub salt into the wound for the home custodian, his momentum took him ploughing straight into Roberts, and the game was delayed for 10 minutes while the concussed keeper was treated and stretchered off.

The Dons lined up with a mixture of youngsters and fringe first-teamers, with the likes of Curtis Osano, Stacey Long, Jason Prior and Charlie Strutton looking to prove themselves with watching first team boss Neal Ardley following their recent injuries.

AFC started the stronger, with Prior heading two early chances wide, but Chipstead became more of a threat as the half wore on, Chris Ellis putting a belter from the edge of the area just over before Roberts deflected a goal-bound Jason Henry effort wide.

The warning was not heeded, and the hosts took the lead two minutes before the break when giant striker Rob Haworth rose above the Dons defence to plant a header from Joe Nwoko's cross perfectly beyond keeper Mikhail Jaimez-Ruiz and into the back of the net.

However, the lead was short lived as AFC drew level on the stroke of half-time, Strutton getting to Prior's pass across the area just before Grant before finishing in the far corner.

After the break, Prior was again off-target with a header from a free-kick and Kevin Saint-Luce's cross-shot was saved by Grant before the unfortunate keeper gifted AFC their winner on 73 minutes.

A shot on the turn in the area from Prior was just wide soon afterwards, while Henry's effort at the other end, when the Chipstead man had more time than he thought, met a similar fate, but it was the Dons who went through to meet Sutton United in the last four.